A.放電時(shí)正極PbO2和負(fù)極Pb均生成PbSO4,并且電解液相對(duì)密度變小;
B.充電時(shí)PbSO4正極轉(zhuǎn)變?yōu)镻bO2,負(fù)極轉(zhuǎn)變?yōu)镻b,并且電解液相對(duì)密度變??;
C.充電時(shí)PbSO4正極轉(zhuǎn)變?yōu)镻b,負(fù)極轉(zhuǎn)變?yōu)镻bO2,并且電解液相對(duì)密度變小
D.放電時(shí)負(fù)極PbO2和正極Pb均生成PbSO4,并且電解液相對(duì)密度變小;